# sneak/ubuntumirror

Docker container for syncing bionic ubuntu LTS mirrors
to reduce network traffic and speed up build times.

Then even your builds (where you can't specify links) will go fast.

# Levers

* `MIRROR_ARCHITECTURES`
    * default `amd64`. 
    * You may want `i386,amd64`.
* `MIRROR_CATEGORIES`
    * default `main,universe`.
    * You may want `main,universe,restricted,multiverse`. Will use lots of
      disk.
* `UBUNTU_MIRROR_PROJECTS`
    * default `xenial,xenial-updates,xenial-security,xenial-backports,bionic,bionic-updates,bionic-security,bionic-backports`.
* `UBUNTU_MIRROR_SOURCE`
    * default `archive.ubuntu.com`.
    * You may want `xx.archive.ubuntu.com` (where `xx` is your country
      code).
* `MIRROR_INTERVAL_SECONDS` - mirror sync interval
    * default `43200` (12h)
    * You may want `10800` (3h)

# Example dnsmasq setup

```
apt update && apt -y install dnsmasq
echo address=/mirrors.ubuntu.com/172.17.0.1 > /etc/dnsmasq.d/ubuntu-mirror-local
```

Then, just add `--dns 172.17.0.1` to your /etc/default/docker opts
and bounce the docker daemon.  Future containers will talk to your local
mirror.